Window regulator



y 11, 1967 v. v. KUBISIAK 3,

' wmnow REGULATOR Filed March 24, 1965 5 Sheets-Sheet 1 INVENTOR. 1 M; H

O VAL-V KUBISIAK BWTHM .ATTY.

July 11, 1967 v. v. KUBISIAK WINDOW REGULATOR 5 Sheets-Sheet Filed March24, 1965 ,INVENTOR. VAL V. KUBISIAK ATTY.

July 11, 1967 v. v. KUBISIAK 3,330,071

WINDOW REGULATOR Filed March 24, 1965 5 Sheets-Sheet 3 I I INVENTOR.

FW 7 BY' VAL' V. KUBISIAK D HG 8 v v .7

ATTY.

United States Patent 3,330,071 WINDOW REGULATOR Val V. Kubisiak, 410 N.Oakhill Ave., Janesville, Wis. 53545 Filed Mar. 24, 1965, Ser. No.442,453 7 Claims. (Cl. 49-362) maintenance or repair, is reliable inoperation, is strong,

is free from binding, is light in weight, and is inexpensive andeconomical.

The foregoing and other objects will appear from the description of theinvention which consists of certain novel details of construction andcombinations of parts hereinafter described and claimed.

In the drawing:

FIG. 1 is a front elevational view, partly in section, illustrating awindow unit with sliding window sashes, equipped with the mechanism of adevice constructed in accordance with the invention," the cover trimmembers of the device being removed.

FIG. 2 is a sectional view taken on line 2-2 of FIG. 1.

FIG. 3 is a sectional view taken on line 33 of FIG. 6.

FIG. 4 is a perspective view of a threaded bracket member of the device.

FIG. 5 is a perspective view of the end gear box member of the device.

FIG. 6 is a frontal elevational view of the same window unit, showingthe cover trim members in place.

FIG. 7 is a perspective view of the one-piece center gear box member ofthe device.

FIG; 8 is a plan view of the sheet 'piece from which said center gearbox is made. p

The double-hung window unit is shown as having a front and lower sash 1with a glass pane 1g, and an upper sash 2 with a glass pane 2g; eachsash being in sash channels in window frame 3. The channels are providedby the usual arrangement of stops or guide strips shown as front stops6a, 6b, central stops 7a, 7b and rear stops 8a, 8b. The window unit alsoincludes a stool 4 and easing trim 5.

Mounted on the top of stool 4 intermediate the ends thereof is a gearbox 90. A gear arrangement 9 in gear box 90 has bevel gears 9a and 9b,each with ten teeth, driven by bevel gear 90 which has twenty teeth. Ontop of 'the stool, at each end thereof, attached to the front stop,

is an end gear box. At one end, against front'stop 6a, is gear box 10ahousing mitre bevel gears 11, 12, each having twelve teeth; and at theother end, against front stop 6b, is gear box 10b housing mitre bevelgears 13, 14, each having twelve teeth.

A horizontal shaft 20, made up of shaft portions a, 20b, 20c, 20x, 20y,and couplings 21, 22, carries gears 9a, 9b and gears 11 and 13.

Gears 12 and 14 are mounted respectively on the lower ends of verticallyextending threaded shafts 15a, 15b respectively.

Attachd to the front face of lower sash 1 are threaded brackets 16a, 16bwhich threadingly engage threaded shafts 15a, 151) respectively.

The upper ends of threaded shafts 15a, 15b are journaled in fixtures17a, 17b respectively, which fixtures are secured to front stops 6a, 6brespectively, projecting out therefrom in front of lower sash 1.

Gear 9c is driven by a crank C which fits a crank slot CS in the shankof gear 90.

Lower sash 1 may thus be raised and lowered by the turning of crank C.The crank drives gear 90, which through gears 9a and 9b rotates shaft20; the shaft 20 through gears 11, 13 drives the gears 12 and 14 tothereby rotate threaded shafts 15a, 15b and drive threaded brackets 16a,16b thereon either up or down to thus either raise or lower the windowsash 1.

The working mechanism is hidden from view by cover trim members. Thehorizontal shaft 20 and the gear boxes and associated gears are hiddenby L-shaped cover trim members 30a, 30b and 30c; the center member 30creceiving the members 30a, 30b telescopically to enable easy adjustmentto different window widths. The vertical shafts 15a, 15b, the threadedbrackets 16a, 16b and the journal fixtures 17a, 17b are hidden byL-shaped cover trim members 30cm and 3011b.

Each of the threaded brackets, as shown in FIG. 4, may be easily,economically and advantageously made from one piece by bending a thinsteel strip into an L- shaped bracket with one leg three layers thick,as shown, and forming threaded opening 163 through the three layerportion. Mounting holes 161, 162 extend through the other portion.

Each end gear box, as shown in FIG. 5, may be easily, economically andadvantageously formed from one-piece 'by: bending a thin steel stripinto the b or d shape shown with the extending leg two layers thick;forming journal holes 103, 104 and 105 therein as shown; and formingmounting holes 101, 102 through the two layer legs as shown. Journalholes 104 and 105 are aligned, and rereive horizontal shaft 20therethrough; the box thereby supporting and journaling the shaft. Shaftportion 20a is supported and journaled in box 10a. Shaft portion 20b issupported and journaled in box 10b. Hole 103 receives the lower end ofone of the vertical threaded shafts on i which, inside the box, ismounted its bevel gear.v

The central gear box 90, shown in perspective in FIG. 7, may be easily,economically and advantageously made by bending from a pre-cut one-piecesheet of thin steel. In FIG. 8 is shown the piece from which the box ismade, the dashed lines indicating where bends are made.

Box is formed with three walls parallel to the window panes; these threewalls being: a front wall FW; a back wall BW; and an inner wall IWspaced from and intermediate said front and back walls. A top T isnormal to and joins wall FW and wall IW at the generally forward portionof the box, and a pair of end walls EW and EW stand normal to both saidtop T and said walls FW and 1W. At the generally rearward portion of thebox there is: at one end thereof, a two-layer end wall made up of wallsEW and EW at the other end thereof, a

two layer end wall made up of walls EW and EW and spaced from said endwalls and from each other are center walls CW and CW standing parallelto said end walls. Joining wall CW and wall EW is a bottom B and joiningwall CW and wall EW is a bottom B Aligned openings H and H in front wallFW and inner wall 1W, respectively, receive the front and larger shankof the driving gear 90, said shank being thereby journaled and supportedin the box. Openings H in back wall BW is smaller than and aligned withsaid openings H, and H and receives the smaller shank of driving gear 90to thereby journal and support said shank in the box. Openings H H H inwalls EWn, EW and CW respectively, and openings H H and H in walls CW EWand EW respectively, are aligned and are of equal size, and receive thehorizontal shaft therein. Walls EW EW and CW support and journal shaftportion 20 For conveniently mounting .box 90 on the stool 4, two

screw holes SH are provided in top T, and a screw hole SH is provided ineach of the bottoms B and B It has been found that steel rod ofone-quarter of an inch diameter is excellent for shaft portions 20a,20b, 20c, 20x and 20y; and that sheet steel of about 18 guage isexcellent for the gear boxes a, 10b, and 90, as well for threadedbrackets 16a, 16b and journal fixtures 17a, 17b. The cover members 30a,30b, 30c, 3012a, and 30191) are made of sheet steel of about 26 gauge.The vertical threaded shafts a, 15b are three-eighths of an inch indiameter with 16 threads to the inch, triple lead; and the threadedopenings in brackets 16a, 16b of course have matching threads. Gear 9cis about one and one-sixteenth inches in diameter. Gears 9a, 9b areabout one-half inch in diameter, and the gears 11, 12, 13, 14 are abouteleven sixteenths inch in diameter. V

This window sash operating and holding device is easy to install in anydouble hung window in existing'buildings or in new construction. Thegears and shaft portions are assembled with their associated boxes; thenthe end boxes are merely placed on the stool and screwed to the frontstops, as shown. The central box 90 is then placed on the stool upagainst one of the end boxes and screwed to the stool. Shaft portion 20cis then selected, or cut, to the proper length to adjust for anyvariation in width, and assembled with couplings 21, 22 to the shaftportions 20b and 20x. Fixtures 17a, 17b are screwed to the front stops,and the threaded brackets 16a, 16b are screwed to the sash l. The covertrim members are then merely screwed into place; members 30a, 30b and300 to the stool, and members 30m: and 3017b to the front stops. Theentire device is thus easily installed and is very attractive. Ithas'all working mechanism hidden from view; but provides easy accessthereto for any repair or maintenance. The entire working mechanism isabove the stool, between the front stops, and out in front of the lowerand front sash in extremely convenient location. The crank slot is aboveand close to the stool, and ofi to one side of the center of the stool,and is thus .very

advantageously located for the convenience of the operatoi'. The deviceoperates quietly, easily and smoothly, without binding, in opening andclosing the sash. It holds the window'strongly in any position, therebyproviding security against forced entry from the back side, i.e., fromthe outside or exterior.

Having described the invention, what is claimed is:

1. In combination with a double hung window unit having a frameincluding a stool along the bottom thereof, and a pair of front stopsalong the sides thereof, and having a sliding lower sash arrangedtherein, a sash operating device comprising: a first threaded bracketfixed to the front face of said sash at one side thereof; a secondthreaded bracket fixed to the front face of said sash at the other sidethereof; a first vertically arranged threaded shaft disposed directly infront of said sash at one side thereof in driving engagement with saidfirst bracket; a second vertically arranged threaded shaft disposeddirectly in front of said sash at one side thereof in driving engagementwith said second bracket; the lower ends of each vertical shaftsterminating above said stool; said first vertically arranged shafthaving a bevel gear on its lower end; said second vertically arrangedshaft having a bevel gear on its lowerend; a horizontally arranged shaftassembly disposed. between said stops above said stool and below saidvertical shafts; said horizontal shaft assembly including at one endthereof a first bevel gear meshing with the bevel gear on said firstvertical shaft, at the other end thereof a second bevel gear meshingwith the bevel gear on said second vertical shaft; and a drive geararrangement disposed above said stool and between'said stops forimparting rotating movement to said'horizontal shaft assembly to raiseand lower said sash; said horizontally arranged shaft assembly having,between one of said bevel gears thereon and said drive gear arrangement,three shaft portions and two couplings fixed to and vertically extendingalong one of said stops,

covering said first threaded shaft and threaded bracket; and a secondremovable cover trim member, fixed to and vertically extending along theother of said stops, covering said second threaded shaft and threadedbracket.

3. The invention defined in claim 1 wherein said drive gear arrangementincludes a crank receiving gear and a pair of gears meshed therewith indriving engagement with said horizontal shaft assembly to rotate saidhorizontal shaft assembly twice in response to each rotation ofsaidcrank receiving gear.

4. In combination with a double hung window unit having a frameincluding a stool along the bottom thereof, and a pair of front stopsalong the sides thereof, and having a sliding lower sash arrangedtherein, a sash operating device comprising: a first threaded bracketfixed to said sash; a second threaded bracket fixed to said sash;

a first vertically arranged threaded shaft in front of said sash indriving engagement with said first bracket; a second vertically arrangedthreaded shaft in front of said sash in driving engagement with saidsecond bracket; a horizontally arranged shaft assembly disposed abovesaid stool and below said vertical shafts and connected with saidvertical shafts to rotate them upon rotation of said horizontal shaftassembly; gear means disposed above said stool and between said stopsfor imparting rotating movement to said horizontal shaft assembly toraise and lower said sash;'said horizontally arranged shaft'assemblyhaving, between said gear means and one of said vertical shafts, aplurality of horizontal shaft portions and coupling means connectingsaid portions; and removable cover trim means extending over and alongsaid stool covering said assembly and said gear means; the

entire device being within the inner. boundary of said frame.

5. In combination with a double hung window unit having a frameincluding a stool along the bottom thereof, and a pair of front stopsalong the sides thereof, and

having a sliding lower sash arranged therein, a sash operating devicecomprising: a first threaded bracket fixed to said sash; a secondthreaded bracket fixed to said sash; a first vertically arrangedthreaded shaft in front of said sash at one side thereof in drivingengagement with said first bracket; a second vertically arrangedthreaded shaft in front of said sash at the other side thereof indriving engagement with said second bracket; a driving arrangementdisposed above said stool, between said stops and below said verticalshafts, and connected with said verti-. cal shafts to'rotate them'forraising and lowering said 7 having a frame including a stoolalong thebottom there-- of, and a pair of front stops along the sides thereof,and having a sliding lower sash arranged therein, a sash operatingdevice comprising: threaded bracket means fixed to said'sash; verticallyarranged threaded shaft means in front of said sash in drivingengagement with said bracket means; driving means disposed above saidstool and be tween said stops engaged with said vertical shaft means forraising and lowering said sash; said driving means including ahorizontally arranged shaft assembly and a drive gear means; saidassembly having, on one side of said gear means, a plurality ofhorizontal shaft portions and coupling means connecting said portions;and removable cover trim means extending over and along said stoolcovering said assembly and said drive gear means; the entire devicebeing within the inner boundary of said frame.

7. In Combination with a double hung Window unit having a frameincluding a stool along one end thereof, and a pair of front stops alongthe side thereof, and having a sliding sash arranged therein, a sashoperating device comprising: threaded bracket means fixed to said sash;threaded shaft means disposed completely within the inner boundary ofsaid frame and in front of said sash in driving engagement with saidbracket means; drivmg means disposed on said stool and completely withinthe inner boundary of said frame in driving engagement with saidthreaded shaft means for opening and closing said sash; said drivingmeans including a shaft assembly and a drive gear means; said shaftassembly having, between said drive gear means and said threaded shaftmeans, a plurality of shaft portions and a coupling means connectingsaid portions; and removable cover trim means extending along said stoolcovering said driving means; the entire device being within the innerboundary of said frame.

References Cited UNITED STATES PATENTS 8/1949 Toth 268-433

6. IN COMBINATION WITH A DOUBLE HUNG WINDOW UNIT HAVING A FRAMEINCLUDING A STOOL ALONG THE BOTTOM THEREOF, AND A PAIR OF FRONT STOPSALONG THE SIDES THEREOF, AND HAVING A SLIDING LOWER SASH ARRANGEDTHEREIN, A SASH OPERATING DEVICE COMPRISING: THREADED BRACKET MEANSFIXED TO SAID SASH; VERTICALLY ARRANGED THREADED SHAFT MEANS IN FRONT OFSAID SASH IN DRIVING ENGAGEMENT WITH SAID BRACKET MEANS; DRIVING MEANSDISPOSED ABOVE SAID STOOL AND BETWEEN SAID STOPS ENGAGED WITH SAIDVERTICAL SHAFT MEANS FOR RAISING AND LOWERING SAID SASH; SAID DRIVINGMEANS INCLUDING A HORIZONTALLY ARRANGED SHAFT ASSEMBLY AND A DRIVE GEARMEANS; SAID ASSEMBLY HAVING, ON ONE SIDE OF SAID GEAR MEANS, A PLURALITYOF HORIZONTAL SHAFT PORTIONS AND COUPLING MEANS CONNECTING SAIDPORTIONS; AND REMOVABLE COVER RIM MEANS EXTENDING OVER AND ALONG SAIDSTOOL COVERING SAID ASSEMBLY AND SAID DRIVE GEAR MEANS; THE ENTIREDEVICE BEING WITHIN THE INNER BOUNDARY OF SAID FRAME.